I have a concept for a race that I'm very confident is sound in general, but I'm wondering if they would do well in the setting I currently have in mind. The race has a lizard-like appearance, largely because they have scales, but they're warm-blooded. They're a bit bigger than humans. An adult female stands 173 cm and weighs 72 kg, and an adult male stands 191 cm, and weighs 91 kg on average, as they have stockier builds. They have an internal body temperature slightly above that of humans as well (no specific temperature set yet). I have other physical details worked out, but I'm pretty sure those are the most important for this question. If anything else is needed, ask, because I may have it worked out or have an easy way to arrive at an answer from what I do know.
The setting that I'm considering right now, has them on a planet whose average temperature is in the 330-340K range, and is roughly 40% covered by water (something I don't mind adjusting if necessary,). The planet is clearly too warm for humans to survive, but what I'm wondering is if this fictional race could live there. My thoughts are that the higher body temperature would make it easier for them to handle the higher heat, and they wear loose clothing that most people would consider revealing but not particularly indecent.
So, does the idea as set forward work? If it does, is it fairly realistic or merely feasible? I'd prefer not to make massive adjustments to the setting since I want to hold onto the basic concept, but if some adjustments need to be made, what should be modified?